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Finding the Fourth Proportional to 387,342.46, 577,120.55 and 365,587.48

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Solution

The fourth proportional to 387,342.46, 577,120.55 and 365,587.48 is: 544,706.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,342.46 : 577,120.55 = 365,587.48 : x
  2. Step 2: Convert to fraction form
    387,342.46/577,120.55 = 365,587.48/x
  3. Step 3: Cross multiply
    387,342.46x = 577,120.55 × 365,587.48
  4. Step 4: Simplify right side
    387,342.46x = 210,988,047,530.71
  5. Step 5: Solve for x
    x = 210,988,047,530.71/387,342.46
  6. Step 6: Final answer
    x = 544,706.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.